Seiko Cal. 5666 - 806

The Seiko 5666-806 represents an important milestone in Seiko's 1987 lineup. Powered by the 5666 caliber with 28j jewels beating at 36,000 bph, it delivers a 37 hours power reserve. [seikata-wm-83b2f11e6a21]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

9.9mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

90m

Dial Color

Cream

Jewels

28j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1987

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